body, html {
    margin: 0;
    padding: 0;
    height: 100%;
    background-color: skyblue;
}

#title {
    font-size: 22px;
    font-weight: normal;
}


.box1 {
    width: 100px;
    height: 100px;
    background: url("../assets/img/vue.jpg") no-repeat;
    background-size: contain;
}

.box2 {
    width: 200px;
    height: 200px;
    background: url("../assets/img/react.png") no-repeat;
    background-size: contain;
}

.box3 {
    width: 300px;
    height: 300px;
    background: url("../assets/img/angular.jpg") no-repeat;
    background-size: contain;
}

